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CPW-Fed Ultra-Wideband Lotus-Shaped Quasi-Fractal Antenna
Dong-Jun KIM Tae-Hak LEE Jun-Ho CHOI Young-Sik KIM
IEICE TRANSACTIONS on Communications
Publication Date: 2012/12/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
ultra-wideband antenna, monopole antenna, coplanar waveguide, quasi-fractal,
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In this letter, a novel ultra-wideband circular quasi-fractal monopole antenna with a six-petaled lotus pattern is presented. The CPW-fed technique and quasi-fractal concept are used to achieve ultra-wideband characteristics. The size of the proposed antenna is 4250 mm2 with a lotus diameter of 19.8 mm. The proposed antenna exhibits ultra-wideband characteristics from 2.65 to 12.72 GHz, which corresponds to a fractional bandwidth of 131%. The measured radiation pattern of the proposed antenna is nearly omnidirectional.